The Guangzhou Ionospheric Observatory is located near the geomagnetic equator (geomagnetic coordinates; 183.0, E, 11.5, N), According to the analysis of ionospheric data from 18 observatories, Guangzhou is situated at the north crest of the double-crest where foF2 reaches its maximum value. During high solar activity years, the maximum value of foFz occurs even at night time. In addition, the occurring frequency of the ionospheric disturbances is higher than that at other observatories in our country. These characteristics are all considered equatorial anomaly phenomena of the F2 layer. Keywords: Chinese translations, China.